Wrench.



R. S. LINDSTROM.

WRENCH.

APPLICATION FlLED 0CT-1l |9l5- 1 223 fififi Patented Apr. 24, 1917.

El l "i 30 15 INVENTOR WITNESSES W MJ% BY lllhllTEf) SFATE PATENT @FFQE.

RICHARD S. LINDSTROM, OF DETROIT, MICHIGAN.

WRENCH.

Application filed October 11, 1915.

T all whom it may concern:

Be it known that I, RICHARD S. Linns'rnoir, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Wrenches, of which he following is a specilication.

My present invention relates to a new and improved wrench; and the main object thereof is to provide an improved wrench wherein one of the jaw members is movable with respect to the other one so as to accommodate structures of varying widths thcrebctween and to provide novel means to retain the normally movable jaw member in an approximately rigid position with re spect to the other jaw member, to the end that the device may be freely actuated with out danger of the said normally movable jaw becoming loose or moving with respect to the other one.

Another object is to provide a device of the type in question that is extremely simple in construction, durable, highly practical, and which it is believed may be manufactured at a minimum cost.

Various other objects and advantages will become apparent during the continuance of the following description.

The above and other objects which will become apparent, are accomplished by such means as are shown in their preferred form in the accompanying drawings, described in the following specification and then more specifically pointed out in the appended claim.

In the accompanying drawings wherein like characters designate like parts throughout the several views;

Figure 1 is a view in side elevation of my improved wrench showing the same as in its preferred embodiment.

Fig. 2 is a similar view showing parts in section.

Fig. 3 is a transverse sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a view in detail showing the locking member in perspective.

In the drawings the numeral designates the body portion or shank structure of the wrench which carries a handle 11 at one end and a rigid jaw member 12 at the other end. The body 10 is slotted longitudinally as at 13 and provided with a plurality of teeth 14 on one edge thereof as Specification of Letters Patent.

Patented Apr. 241., 1917.

Serial No. 55,289.

clearly shown in Fig. 2. Adjacent its con nection with the handle 11, the shank 10 is further provided with an outstanding lug 15 which has an opening 16 formed therethrough for the purpose that will presently appear.

The normally movable jaw 17 is cut out longitudinally as at 18 to accommodate the shank 10 and carries a block 19 in the said cut-out as at 20 which is designed to operate in the slot 13 of the shank. Means in the form of a coil spring 21 may be arranged in the slot 13 between one end wall thereof and the blocks 19 to normally retain the jaw 17 in its outwardmost position, or rather in engagement with the stationary jaw 12.

The jaw 17 is further provided with a bore 22 to accommodate the shank 23 of the locking member and a cut-out 2% to accommodate, at certain times the enlargement 25 and the projection 26 thereof. The shank of the locking member extends rearwardly with respect to the movable jaw and is passed through the opening 16 in the lug 15 of the shank whereby it may be freely turned by the handle portion 27 thereof. For the purpose of preventing accidental turning movement of the locking member the jaw 17 carries a spring catch 28 which, when the projection is in place, enters the notch 29 in the shank 23.

In the operation of this device assuming that the parts are in the position shown in Fig. 2 it will be understood that the jaw 17 will be held in an approximately rigid position with respect to the other jaw by reason of the fact that the projection 26 of the locking member is entered between certain of the teeth 1% of the shank. However if it is desired to unlock the jaw 19 so that it may be readjusted the operator simply grasps the handle 27 of the locking member and by imparting thereto a halfturn causes the projection 26 to be moved out of engagement with the teeth 14 to a snug position within the cut-out 24. When the locking portion is in this position the jaw 17 may be adjusted in accordance with the desire of the operator.

From the foregoing it is believed that the advantages and novel features of my invention will be readily understood and therefore further detailed description is deemed unnecessary.

In reducing my invention to practice I find that the form referred to herein as the most practical and preferred embodiment is the most efficient, but realizing that certain conditions will necessarily vary in con currence with the adoption of my device, I desire to emphasize the fact that various minor changes in the details of construction and in the proportion of parts may be resorted to when required without sacrificing any of the advantages of my invention as defined in the appended claim.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

In a wrench of the character described, a shank having a handle formed at one end thereof, a jaw fixed at the other end of said shank, said shank being slotted longitudinally, another jaw having an opening'to receive said shank, said second mentioned j aw carrying a portion operable in said slot, a spring mounted in said slot to retain said movable aw normally in engagement with said fixed jaw, a plurality of teeth formed on one edge of said shank, a locking member having one end journaled in said movable jaw, said locking member being provided with an offset adjacent one end, a projection formed on said offset, said movable jaw being cut out to receive said offset and said projection at certain times, a handle to turn said lockinglmember to position said projection between certain of said teeth to look said movable jaw with respect to said fixed jaw, and means to prevent accidental turning movement of said locking member when said projection engages with said teeth, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

RICHARD S. LINDSTROM.

Witnesses: v

JEss. STANLEY ARMsTRoNo,

JOHN MAUNE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

